JPH0518363Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> The present invention is a safety device for a passenger elevator, particularly a safety device for a passenger elevator that operates by detecting excess capacity in addition to detecting the loaded load. It is related to the device.

<Conventional technology> Elevators are required to be equipped with a load detection device in the elevator car according to Article 129-9, Paragraph 1, Item 12 of the Building Standards Act. When the threshold is exceeded, the system is required to activate, issue an alarm, stop the closing operation of the doors of the car and hoistway entrances, and operate to keep these doors open.

Furthermore, the above-mentioned building standards laws and regulations define that the passenger capacity of a car should be the rated load divided by 65 kg.

Therefore, in a cargo elevator, when the load of cargo being loaded exceeds approximately 110% of the rated carrying capacity, an alarm is issued, and the car and landing door are held open, and in a passenger elevator, the load corresponding to the capacity is raised. When this is detected, an alarm is issued, and the car and landing doors are kept open.

The cargo elevator has a larger floor area than the passenger elevator, and its rated load is also set to a larger value than the passenger elevator.

Cargo elevators are also used to carry both cargo and passengers.

This cargo elevator has a wider floor space than passenger elevators, making it easier to carry cargo in and out, and the safety device is activated when the load exceeds 110% of the rated load. An alarm has been issued,
Safe operation is achieved by keeping the passenger car and landing doors open.

<Problems to be solved by the invention> In the conventional passenger elevator described above, the rated load is set to be larger than that of the passenger elevator, for example, 2000 kg.

In this case, according to the provisions of the Building Standards Act mentioned above, the capacity for passengers using the cargo elevator is 2000/65=30.7, which means 30 people.

However, since the floor space of a cargo elevator is slightly larger than that of a passenger elevator, the capacity is determined to be, for example, 23 people based on the floor space. The capacity is displayed.

However, in conventional passenger elevators, the safety device is activated by detecting the rated load for the cargo, so in the above case, even if 23 people are on board, the weight is approximately 65Kg x 23 = 1500Kg, which is the rated load. There is still plenty of room for the load capacity of 2000Kg.

Therefore, when passengers use the cargo elevator, the number of people who ignore the capacity display and greatly exceed the capacity often board the elevator in an overcrowded state, causing discomfort to the passengers.

The present invention was developed in view of the current situation of this type of cargo elevator as mentioned above, and its purpose is to prevent excessive number of passengers from getting on board, and to provide a comfortable and safe elevator. The purpose of the present invention is to provide a safety device for a passenger elevator that can be operated.

<Means for Solving the Problems> In order to achieve the above-mentioned object, in the present invention, when the first load detection device for detecting an excess of the carrying load on the passenger car is activated, an alarm is issued and the said passenger car is In a safety device for a passenger elevator in which a car door and a landing door are held open, a second load detection device is activated when it detects that the passenger capacity is exceeded, and has a smaller operating load than the first load detection device. a changeover switch that activates the second load detection device through a switching operation; and a changeover switch that is driven by the operation of the second load detection device to issue an alarm and to operate the car door and the landing area. The structure includes a safety device that keeps the door open.

<Function> In the present invention, when transporting cargo, the changeover switch is not operated, so the second load detection device is in an inactive state.

Therefore, when loading luggage into the car, the first load detection device detects whether the load is below the rated carrying capacity.
If it is detected that it exceeds 110%, an alarm is issued and the car and landing doors are held open.

Therefore, in this case, the load is 110% of the rated live load.
% or less, cargo can be transported safely.

In addition, when passengers use the elevator,
By operating the changeover switch, the second load detection device is brought into operation.

The second load detection device is activated when detecting an excess of a passenger load corresponding to the capacity of the elevator, which is smaller than the rated load detected by the first load detection device, and the safety device is activated.

When the safety device is activated, an alarm is issued and the car and landing doors are held open.

Therefore, when passengers use the elevator, they operate the changeover switch to ensure safe and comfortable use by passengers within the capacity.

<Example> Hereinafter, an example of the present invention will be described in detail using FIGS. 1 and 2.

Here, FIG. 1 is a front view showing the configuration of the main parts of the embodiment of the present invention, and FIG. 2 is an electric circuit diagram showing the structure of the main parts of the embodiment of the invention.

As shown in FIG. 1, in the embodiment of the present invention, an elastic body 3 is disposed between the lower surface of the car body 1 and the car frame 2, and this elastic body 3 acts when the load inside the car body 1 increases. It's starting to shrink.

Further, between the lower surface of the car body 1 and the car frame 2, a first load detection device 41 and a second load detection device 4 are provided.
2 is installed.

This first load detection device 41 is configured to operate when the load exceeds 110% of the rated carrying load due to the elastic body 3 that contracts in response to the load when cargo is loaded into the car body 1. .

The second load detection device 42 is activated by the contraction of the elastic body 3 when the number of passengers in the car body 1 reaches its capacity.

For example, the load when the number of passengers reaches its capacity is
The weight is 1500Kg, which is smaller than the rated load capacity of 2000Kg mentioned above.

That is, the second load detection device 42 is adjusted to operate when a load of 110% of the value multiplied by the passenger capacity of 65 kg is applied to the car body 1.

Further, a driving panel 5 is provided inside the car body 1,
A changeover switch 6 is attached to this operation panel 5.

The circuit section of the embodiment of the present invention is configured as shown in FIG. There is.

When this relay 7 is energized, an alarm is issued from an alarm device (not shown), and control is performed such that the car door and the landing door are held open.

Further, a contact 42a of the second load detection device 42 and the changeover switch 6 are connected in series with each other in parallel to the above-mentioned contact 41a.

In the embodiment of the present invention having such a configuration, the car body 1 and the car frame 2 constitute a car, and the relay 7 and a control device (not shown) constitute a safety device.

Regarding the embodiment of the present invention having the configuration described above,
Its operation will be explained next.

When transporting luggage using the cargo elevator, the changeover switch 6 is not operated and the luggage is carried into the car body 1.

As mentioned above, the first load detection device 41 operates at 110% of the rated carrying load, for example, 2000 kg,
The second load detection device 42 detects a load corresponding to the capacity.
It is set to operate at 110%, for example 1500Kg.

Therefore, during the process of loading the load into the car body 1, the second load detection device 42 is activated and the contact 4 is activated.
2a is turned on, but since the changeover switch 6 is turned off, the relay 7 is not energized at this time.

When the load reaches 2000Kg, which is 110% of the rated load, the first load detection device 41 is activated and the contact 41a is turned ON, so the relay 7 is energized and an alarm is issued. The car door and the landing door are held open.

In this way, cargo within the rated load can be safely transported.

On the other hand, when a passenger uses the cargo elevator, the elevator is used with the changeover switch 6 turned on.

If a passenger gets into the car body 1 and exceeds the capacity, the second car will be loaded with a load of 1500 kg, for example.
The load detection device 42 is activated and the contact 42a is turned on.
Therefore, the relay 7 is energized to issue an alarm, and the car door and landing door are held open.

In this way, use within the capacity is ensured, so even when used by passengers, comfortable and safe operation can be achieved.

In the embodiment, the load is detected by the contraction of the elastic body provided between the car body and the car frame, but the present invention is not limited to the embodiment. The load can also be detected by the deflection of this thimble rod.

<Effects of the invention> As explained in detail above, according to the present invention, in addition to detecting the load of luggage when used by passengers, the load corresponding to the passenger capacity is detected, and comfortable and safe operation is always possible within the passenger capacity. A safety device for cargo elevators is provided.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing the configuration of the main part of the embodiment of the present invention, and FIG. 2 is an electric circuit diagram showing the structure of the main part of the embodiment of the invention. 1... Car body, 2... Car frame, 3... Elastic body, 6... Changeover switch, 7... Relay, 41...
...first load detection device, 42...second load detection device.

Claims (1)

[Scope of utility model registration request] In a safety device for a passenger elevator, in which when a first load detection device that detects an excess of a load on a car is activated, an alarm is issued and the car door and the landing door are held open, a second load detection device that is activated when an excess of the passenger capacity is detected and has a smaller operating load than the first load detection device; and a changeover switch that puts the second load detection device into an operating state by a switching operation. and a safety device that is driven by the operation of the second load detection device to issue an alarm and keep the car door and the landing door open. Safety device.